 
 (defn begin []
   (do-begin *command-line-args*))
-

                          ssh-options
                          [(ssh-client host user) cmd]))))

(defn rsync 
  "Rsync local files to remote machine's files,for example:
     (deftask :deploy \"scp files to remote machines\" []
    (rsync \"src/\" \":/home/login\"))

                   debug (:debug cluster)
                   log (or (:log cluster) true)
                   clients (if (nil? cluster) (create-clients (first args)) clients)]
               (check-valid-options cluster :user :clients :addresses :parallel :includes :debug :log :ssh-options :scp-options :rsync-options :name :options)
               ;;if task is nil,exit
               (when-exit (nil? task)
                          (str "No task named " (name task-name)))
               (when-exit (and (empty? addresses)
